At Supplement Factory, we take Quality very seriously.

At Handian, our commitment to quality is ingrained in every aspect of our operations. Each ingredient entering our facilities undergoes meticulous scrutiny through comprehensive third-party lab testing, ensuring adherence to the highest standards of authenticity, potency, and purity. Prior to granting access, our suppliers undergo rigorous quality checks to guarantee the delivery of premium ingredients. However, our dedication doesn’t end there. We consistently strive for perfection in our manufacturing methods, staying current and refining processes to ensure every product we create maintains an elevated standard. This unwavering commitment ultimately contributes to a higher quality of life for all who choose our products.

Testing Before Production


Microbiological Testing

At Handian, our commitment to product safety involves rigorous microbiological testing of raw materials. While our in-house lab is equipped for this purpose, we also send materials to a third-party lab for additional micro testing. This dual-verification process ensures that our products meet the highest safety standards, free from dangerous microorganisms like E. coli. Your well-being is our priority, and we take every step to guarantee the quality and safety of our raw materials.

Heavy Metal Testing

At Handian, our commitment to product safety includes thorough heavy metal testing on raw materials, screening for lead, mercury, cadmium, and arsenic. Once cleared, these materials are meticulously stored in designated locations based on their specific storage requirements. Utilizing electronic batch logging, we meticulously track and reference each product’s location for full transparency. This ensures precise tracking of every ingredient, promoting transparency and facilitating the quick location of specific materials within our inventory. Your trust in our commitment to quality and transparency is our priority.

Testing During the Production Run.